Ole christian hansen



, one CHRISTIAN HANSEN,- or sKUnnsNcEs, NORWAY. I

SPECIFICATION forming part of Letters Patent No. 261,343, dated July 18, 18882. y

Application filed May 1B, 1882. (N0 model.) Patented in England May 24, 18Ell,No.2,25-9 in Denmark July 6,1881, No. 455; in Norway August 2, 1881, No. 3,514 in Belgium November 22, 1881, No. 56,299 in France November 23, 1881, No. 145,989, andin Sweden March 3, 1882.

To all whom it may concern:

Be it known that I, OLE GHRISTIAN HAN- SEN, a citizen of Norway, and resident of Skudesnoes, in the Kingdom of Norway, have invented a new and useful Improvement in Fog- Horns, of which the following is a speciiication.

Y My invention relates tosgnal devices known as fog-horns,7 or such as are used on board of ships to produce signals of sbund in foggy `gfeather when signals of light are not discerni- The object of the invention is to provide a light, compact, and conveniently-portable apparatus whereby a sound of great strength may be obtained and the duration ot'each blow of the horn may be increased to continue uninterrup'tedly for any desired length of time, so as to produce a succession of short-blows oras shown in Fig. 3-while the other .bellows is long blows, yor a continuous roar,

In the accompanyin gdrawin gs, Figure l r resents a perspective exterior view of my saidV improved apparatus seen from the right. Fig. 2'is a similar' view of the same seen from the left side. Fig. 3 is a longitudinal sectional elevation and Fig. 4 is a vertical cross-section taken on the line a.' x of Fig. 3, and seen iu the direction of the arrow 1. v

Like letters of reference indicate like parts in the several gures.

A is a casing, being simply a box of about the same proportion in height, length, .and width as that shown in the drawings. This is divided longitudinally by two rigid partitions, forming between them a central chamber, B, on whose top or upper wall, a, above an opening therein,is placed a'pressure-regulating bell bellows being provided with the inwardly-opening air-valves d and d. Between the two bellows D D is mounted in bearingsf, attached to and underneath the bottom a ofthe central chamber, B,VV a shaft, E, provided with two cranks, c and e', placed oppositely ofthe shaft. One end of the shaft E projects through the right-side wall of the box A, and is provided withahand-crank, F, byturningwhich theshaft is revolved. A v

G and G' are angular rods fixed so as to form the pintles of two hinges, H and H,which are attached respectively to the front ends of the rigid portions of the bellows D D. The parts g and g of the rods Gr G', which form right angles to the hinged portion of the said rods, are pivoted with their free ends to the cranks e and e', respectively, so that when the shaft E is revolved the two bellows D D will be operated simultaneously, one forcing air into the chamber B--for instance, through the valve '12( supplied with airv through the valve d. The necessary supply of the outer air enters the box A through its opposite end openings, t', which are provided with metallic covers I,which said covers are closed to the box A on the upper and the two vertical sides,and leaving an openfing at the lower edges, as seen at I' in Fig. 3.

This construction of the coversI prevents rain from entering the box A. The air thus supplied by the bellows D D to the central chamber, B, during the revolving of the shaft E, has constantly free access to the upper springpressed bellows, G, and, according to the rapidity with which the shaft is revolved,will naturally expand the said bellows C to compress the springs c, which latter, on the slowing or cessation ofthe movement of theshaft, react upon the bellows (i, and by their tension not only YIO.

it is evident that it may be prolonged indefinitely by an uninterrupted continuation ofsaid movement, and be increased in intensity by increasing the rapidity ot said movement.

When in use the apparatus is held in front ofthe operator by the strap K, placed around his shoulder,\vhile his left hand holds the strap k to keep the box A in position, and the right hand turns the crank F.

Having thus described my invention, Iclaim as new and desire to secure by Letters Patent- 1. In afog-signal apparatus,the combination, with a horn, J, and air-chamber B, of the bellows i-D Di, having suitable link-connections, g g', andrthe shaft E, provided with oppositelyplaced cranks e c and turn-handle F, substantially as 'hereinbefore set forth. 

